This man built a castle c
This man built a castle called "evil neighbor" or "Malvoisin", while besieging Bamburgh Castle, the headquarters of Robert de Mowbray. Mowbray, the Earl of Northumbria, had earlier helped this man defeat Malcolm III at the Battle of Alnwick. This ruler and his younger brother once poured a chamber pot over elder brother Robert Curthose's head, presaging later power struggles. After the death of Lanfranc, this man left the see of Canterbury vacant for many years until his appointment of the man he would quarrel with over Gregorian reform, (*) St Anselm. He had no children, so his younger sibling, nicknamed Beauclerc, took over after he took an arrow in his lung during a hunting accident. With a nickname possibly alluding to his red-faced appearance, for 10 points name this king of England nicknamed Rufus, the son of William the Conqueror and second Norman king of England.
This man built a castle called "evil neighbor" or "Malvoisin", while besieging Bamburgh Castle, the headquarters of Robert de Mowbray.
William {II} Rufus of England [accept {William Rufus} until mentioned, prompt on {William}]